EXTRUSIVE OR INTRUSIVE: Extrusive GRAIN SIZE:Can be Fine or Course. COLORS:White, cream, blue or grey to green, brown or black. HOW DOES IT FORM:By lava cooling fast and how it sits over a long time. WHAT MINERALS ARE IN IT:There is none. WHERE DOES IT FORM:It forms where volcano erupts and it shoots up into the sky and by the time it falls its cooled and hard. WHAT ARE ITS USES:additive, cleaners, paints, coatings, metal finishing, water systems, and waste water treatments.
BY JARED FUDGE
EXTRUSIVE OR INTRUSIVE: Extrusive
GRAIN SIZE:Can be Fine or Course.
COLORS:White, cream, blue or grey to green, brown or black.
HOW DOES IT FORM:By lava cooling fast and how it sits over a long time.
WHAT MINERALS ARE IN IT:There is none.
WHERE DOES IT FORM:It forms where volcano erupts and it shoots up into the sky and by the time it falls its cooled and hard.
WHAT ARE ITS USES:additive, cleaners, paints, coatings, metal finishing, water systems, and waste water treatments.
http://en.wikipedia.org/wiki/Pumice
http://www.crminerals.com/
http://www.mii.org/Minerals/photopumice.html